Frederick southwell cripps



(No AModel.)

F. S. CRIPPS. PURIPIER.

vNo. 561,203. Patented June 2.1896.

mmv ron W nromver/ UNITED STATES v PATENT OFFICE.,

FREDERICK SOUTHVVELL ORIPPS, OF LONDON, ENGLAND.

PURIFIER.

SPECIFICATION' forming part of Letters Patent No. 561,203, dated J' une2, 1896. Application filed May 17,1895. Serial No, 549,639. (No model.)Patented in England January 30,1895,No. 2,092.

To all whom t may concern:

Beit known that LFREDERICK SOUTHWELL CRIPPS, engineer, a subject of theQueen of Great Britain, and a resident of 27 Great George Street,Westminster, London, in the county of Middlesex, England, have inventedcertain new and useful Improvements in Purifiers, (for which a patenthas been grantedin Great Britain, No. 2,092, dated January 30, 1895,) ofwhich the'following is a specification, reference being had to theaccompanying drawings, forming a part thereof, in which similar lettersof reference indicate corresponding parts.

This invention relates to improvements in valves for use in connectionwith purifiers employed in gas-Works.

This valve is so constructed as to admit of by-passing any layer orlayers of purifying material in the apparatus known as purifiers ingas-works. It is designed to be fixed at one or more of the lower tiersof sieves or grids carrying the purifying material, so that y in thecase of excessive back pressure being given by any particular layer thevalve can be opened and render immediate relief by by-passing that layeronly. Then instead of having to force the gas through the purifyingmaterial, which has become used up, choked, and hard, it can be passeddirect to the fresher and more open material above, thereby obviatingthe necessity of changing the purifier simply on account of the materialin the lower portion being choked. The valve is fixed inside thepurifier, but it is actuated and worked entirely from the outside of thepurifier.

It consists, essentially, of three (3) parts,viz: the body, the valve,and the gear for opening and shutting it; but in order to render thenature of my invention clear I refer. in the following description tothe sheet of illustrative drawings, of which- Figure lis a sectionalelevation with the gearing situated above the valve. One half shows theopen ways through the valve and seating and the other half the solidwebs of the valve and seating. Fig. 2 is a plan showing valve open forpassage of gas. Fig. 3 is a section showing the gearing when placedbelow the valve. Figs. 4 and 5 are elevations showing the manner of xingsame in puriiiers.

The body A is a rectangular or circular pipecasting,prepared withflanges B for fixing to the side plate of purifier in such a way as notto damage or weaken the same. The body is of about the same depth as thelayer of purifying material through which it passes, and around itsbottom edge a shelf C is cast to carry the sieves abutting against it.The upper end of the body is divided into several segments, half ofwhich are open 'D and half are solid E alternately, and in the center isa boss F for carrying the valve-spindle. The upper edges and surfaces Gare faced to form the seating for the valve to work upon. The valve H isa circular disk or grid valve of cast-iron, turning on a center-pin Iand having divisions alternately open D and closed E, being in thisrespect the exact counterpart of the faced body on which it works. A lip.I projects downward, so as to clasp the circular face and seating onwhich the valve works and exclude grit, dac. from the working faces G.The under surfaces and lip are faced, and it is provided with means for'lubrication in all working parts.

In addition to the weight of the Valve keeping it down on its face avolute spring K surrounds the center spindle, causing increased pressurebetween the surfaces and insuring perfect gas-tightness, so that gasshall not pass the valve when it is shut. The gearing for actuating thevalve consists of a bevelpinion L and wheel or segment M. The wheel orsegment is either cast solid on the rim of the upper surface of valve,or is in a separate casting fixed below the valve, as in Fig. 3. In thelatter case the valve and wheel or segment are both fixed to the centerspindle I. The pinion is turned by a short spindle N, passing through asmall stuffing box and gland O on the purifier side plate, and a guidebracket or boss cast on the body.

A quarter-turn of the valve will open or shut it. Stops are cast on thevalve and body to indicate when the valve is fully open or shut. It isconstructed and fitted so that no faces are uncovered or in contact withor exposed to the action of the gas or purifying material when the valveis either open or shut. The depth of the body Z is made to suit thepitch of the sieves or the depth of purifying material in the purifier.

Having thus fully described the nature of IOO my said invention and inwhat manner the same is to be performed, I declare that what I claimisl. In a device of the class described, the combination with a seriesof sieves and adjacent side plates arranged in tiers, of a valvecasingsecured to each plate below the sieve of the tier next above andprovided With a seat and ports, a valve arranged to move in said seatand open or elose the ports, a rotary shaft for the valve extendingtherebelow, and a pinion meshing with the gear to contribute motionthereto.

2. In a device of the class described, the combination with a sieve andadjacent side

